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<html><head><meta charset=UTF-8 /><title>无标题文档</title><style>p.p_num { 78px; height: 24px; border-top: solid 1px #d0d0d0; position: relative; border-bottom: solid 1px #d0d0d0; margin-top: -3px;}span.sy_minus,span.sy_plus { 15px; height: 24px; line-height: 24px; text-align: center; display: block; position: absolute; top: 0px; font-size: 14px; border: solid 1px #d0d0d0; background: #ebebeb; cursor: pointer; border-top: none; border-bottom: none;}span.sy_minus { left: 0px;}span.sy_plus { right: 0px;}input.sy_num { 44px; height: 18px; line-height: 24px; text-align: center; position: absolute; top: 0px; left: 17px;}span.sy_num { padding: 5px 8px; border: solid 1px #d0d0d0; border-left: none; border-right: none; cursor: pointer;}</style><script type="text/javascript" src="jquery-1.8.0.min.js"></script><script type="text/javascript"> $(document).ready (function () { var pl = $("p:last"); var reg = /(.*[:：]s*)([+d.]+)(s*元)/g; $ (".sy_minus").click (function () { var me = $ (this), txt = me.next (":text"), pc = me.closest("p"); var val = parseFloat (txt.val ()); val = val < 1 ? 1 : val; txt.val (val - 1); var price = parseFloat (pc.prev("p").text().replace(reg,'$2')) * txt.val (); pc.next("p").text (pc.next("p").text().replace(reg, "$1" + price + "$3")); var sum = 0; $(".p_num").next("p").each(function (i, dom) { sum += parseFloat ($(this).text().replace(reg, "$2")); }); pl.text(pl.text().replace(reg, "$1" + sum + "$3")); }); $(".sy_plus").click (function () { var me = $ (this), txt = me.prev (":text"), pc = me.closest("p"); var val = parseFloat (txt.val ()); txt.val (val + 1); var price = parseFloat (pc.prev("p").text().replace(reg,'$2')) * txt.val (); pc.next("p").text (pc.next("p").text().replace(reg, "$1" + price + "$3")); var sum = 0; $(".p_num").next("p").each(function (i, dom) { sum += parseFloat ($(this).text().replace(reg, "$2")); }); pl.text(pl.text().replace(reg, "$1" + sum + "$3")); }); })[0].onselectstart = new Function ("return false");</script></head><body> <div class=""> <p class="">单价：36元</p> <p class="p_num"> <span class="sy_minus" id="sy_minus_gid1">-</span> <input class="sy_num" id="sy_num_gid1" readonly="readonly" type="text" name="number1" value="1" /> <span class="sy_plus" id="sy_plus_gid1">+</span> </p> <p class="">需支付：36元</p> </div> <div class=""> <p class="">单价：58元</p> <p class="p_num"> <span class="sy_minus" id="sy_minus_gid2">-</span> <input class="sy_num" id="sy_num_gid2" readonly="readonly" type="text" name="number1" value="1" /> <span class="sy_plus" id="sy_plus_gid2">+</span> </p> <p class="">需支付：58元</p> </div> <p class="">总共需要支付：94元</p></body></html>